One kind of surgical procedure that has never been performed before is a human head transplant, and there's a pretty good reason for it.

The components that make a human body possible - the brain and the spinal cord - are extremely sensitive and work with the rest of your body to function. The idea that one could remove those parts of the human body and place them upon another just sounds insane; right?

One neuroscientist plans to perform the world's first human head transplant by the end of 2017. Whether it will be a success remains to be seen, but several scientifically-published journals report that their research has excelled in lab rats and some other animals.

There are a lot of questions about the morality behind performing such procedures with human bodies, and moreover, what will happen to the person after their head is moved from one body to another? These are concerning ideas that will prompt deep thought and skepticism.